楞伽阿跋多羅寶經註解 2.210

2.210

"Grasping at rules and observances" means taking what is not a precept to be a precept. These are the wrong practices of tīrthikas, who conceive as a cause that which is not a cause, such as keeping the rules of chickens, dogs, and the like. A person of the first fruit does not grasp at those precepts; that is, they see well the characteristics of the suffering of those retributions and the vain toil of their austerities, and therefore do not grasp at them. When foolish common persons grasp at them, they take the requisites such as the five desires to be pleasure, and so seek rebirth. However, these are not the bliss of samādhi. Although they seek a pleasurable fruition, what is there in reality? That person of the first fruit does not take this to be morality; yet it is not that they have no precepts of their own that they uphold. Thus it says: "except in dedicating themselves to the excellence of self-realization..." That is, they dedicate the practice of morality they cultivate from cause toward fruit. Regarding "branches of morality," "branches" means divisions, like the seven factors of awakening and the five branches of morality, and so forth. Although they do not grasp at the former but grasp at the latter, this is still not the non-grasping morality of the Mahāyāna; it is also a form of grasping.